Windows releases

The latest KB for each servicing branch, from Microsoft's public release-information tables. Dates are availability dates, not evidence of what your devices installed.

Latest release per branch

4 branches · 0 dormant CSV Text
Servicing branchLatest releaseLast security (B) releaseCVEs fixed by BKnown issuesStatus
Windows Server
Windows Server 2025 KB5129235 OOB build 26100.33451 · 14 Sep 2026 KB5122871 8 Sep 2026 67963 critical1 exploited 1 open Active
Windows Server 2022 KB5129237 OOB build 20348.5631 · 14 Sep 2026 KB5122882 8 Sep 2026 64160 critical1 exploited 1 open Active
Windows Server 2019 KB5129238 OOB build 17763.9247 · 14 Sep 2026 KB5122876 8 Sep 2026 61658 critical1 exploited 1 open Active
Windows Server 2016 KB5129239 OOB build 14393.9514 · 14 Sep 2026 KB5123099 8 Sep 2026 55348 critical1 exploited 1 open Active

Open known issues

1 open · Windows release health

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